Door latch



Aug. 28, 1923. 1,466,162

W. S. HAMM ET AL DOOR LATCH "Filed Sept. 4, 1920 2 Sheets-Sheet 1 5- 4 v 5 6 @l f f ,//a Jig/T W Y 6 [393' Aug. 28, 1923.

w. s. HAMM ET AL DOOR LATCH 4 2 Sheets-Sheet 2 Filed Sept.

1 .lvvinlvlia N YYI!IIIIIIIIII| Patented Aug. 28, 1923.

' icaiezi' WILLIAM s. HAMM, or HUBBARD woons, AND JAMES A. ernsn, or CHICAGO, ILLINOIS, AssIenons TO'QTHE ADA118385 WES'ILAKE COMPANY, A; CORPORATION or ILLINOIS.

DOOR LATCH.

' Application fi led September 4, 1920,. seriarnojjioseo is TO'aZZ whom it may concern. i 7,

Be it known that we, WILLIAM S. HAMM and JAMES A. Ginsncitizensof the-United ,States, and residents of Hubbard vWoods, county of Cook, State of Illinois, and Ghicago, county of Cook, and State of Illinois, respectively, have invented certain new and useful Improvements in Door Latches, of which the followingis-a specification, and which are illustrated-in the accompanying drawings, forming a -part thereof. V

- The invention relates to latches of the mortise type, inwhich the latch casing is entered into an aperture in the edge of'the door, the latch beingcontrolled by a spindle extending through the door and provided with suitable knobs or-handles.

The object of the-invention is to provide improved means for assembling the various parts of the latch mechanism with the door and securely holding such parts in place.

An embodiment of the invention is hereinafter described, and is illustrated in the accompanying drawings, in which Fig. 1 is a detail edge elevation of the door with the latch applied thereto;

, Fig. 2 is a similar view of a side face of the door; 7 .1

Fig. 3-.is a detail section on the line 3-3 ofFig.2; 1

Fig.4 is a detail section onithe line 4-'-4 ofFig. 2'; Fig. 5 isa ofFigl; Fig. 6 is a View inperspective of the inner face of the escutcheon plate forming a part of the'latch mechanism;

Figs. 7 and 8-are views similar to Figs. 1 and '2, showing a modified form of construction; 1,

- Fig. 9 is a sectionalview on the line..9-9 of Fig. 8;. f

:Fig. .10 is a sectional view on the line 10-10 of Fig. 9.; Fig. 11 is 'a view similar to Fig. '8, showing another modification;

Fig. 12 is a sectional View on the line 12- 12 of Fig. 11, and

Fig. 13 is a view in perspective of the latch casing shown in Figs. 7 to 10.

The latch is illustrated in connection with a hollow metal door, 10, though is capable of being applied to doors of other forms and material.

detail section on the line .5-5

the door. I

i The latch casing is shown at 11, and is seatedwithin the chamber of the door. 10,

'being' entered thereinto through. an aperture in the edge wall 12 of the door, which aperture the front face of the; casing completely fills, such face being flush with the (1001i edge 12 whcnthe parts are assembled. Thelatching element or dog -13*is1, h0wn as of-the oscillating type, and as being pivoted at 14.

to the casing '11. This feature-and the mechanism for controlling the dog, are, however, not of the essence of the invention, and are therefore not fully shown. .When the latch casing is inserted into the doorone';

of its side faces bears against the inner surface of'one of the sidewalls of the door, as

shown in Fi 3, a lug, or pair of lugs, 15-

being provi ed at the inner end and-opposite side ofthelatch casing to bearagainst. V

the inner surfaceofth t sidezwany of the door. r p

A pair of, escutcheon plates 16, 17,: are applied one to each of the Sidefaces of the door, and through-themand the latchcas-nj ingextends a. spindle 18 by means ofwhich the dog 13 is controlled, the spindle enter.- ing into pair of handles 19,320,,0f any desired form and which are connected with the escutcheon plates in the usual manner;

One of the escutcheon plates, ,as 16, is providedon its inner surface with a pair of; in- ,standing ribs or,.flanges 21, which project into the interior of thefdoor, the side wall of which is ;suitably".apertured-for their re ception, these ribs being spacedto slidingly receive the latch casing as. the latter is inserted into the door. This escutcheonp-late is also provided with an instanding stud 22,

against'which the inner end' of thelatchcasing, Or-preferabIy a rearwardly extend ingboss 23 formed thereon, abuts when the latch casing properly positioned within The stud 22 is, preferably provided its.- inner end witha forwardly projecting'lip" "24, which overlaps the boss 23, thereby securing the escutcheon plate against removal 7 while the latch casing is in service position.

In lieu of the lip-24 the ribs 21 maybe longitudinally undercut, the edges of the latch casing being correspondingly configured to receive them, as shown in Fig. 4.

The two escutcheon plates are securedto'v the door by means of screws, as 25, four'being shown, and preferably these screws enter instandlng posts, as 26, 27, formed integral with the two escutcheou plates and mating together in the well known and long prac tieed manner.

In assembling the latch mechanism in connection with a door, the escutcheon plate- 16 isfirst positioned, and the latch casing ll; is-thenrinserted and entered between the ribs 21,- its inner end abutting against the stud 22', its boss 23, when present, interlitting under the lip 24. This interengagement of the latch casing and eseuteheon plate temporaril holds such parts in 3OSiti0I1, and Y i thereupon the spindle 18 is inserted and the opposite escutcheon platerl7 is applied'and the screws 25 driven home, thus completing the operation. The spindle 18- prevents longitudinal movement'of the latch casing and lateral movement thereof in either div rection is prevented both by the spindle and by the en agement'of the casingwith the wall or the deer, and with the l'lbS'Ql.

VVh'ile a preferred form of construction has been shown and described, the invention may be variously embodied; For example, the" length of the ribs 21 is immaterial and they may be so shortened as to be mere posts; t In Figs. 7 to '10 and 13 a constructionlis shown in which the supporting of thelatoh casing and the interlocking therewith of one of the eseutcheoniplates are provided by a single rib 2'8-0n the plate and a channel 29 in the back face or" the casing. By limit- 7 ing the length of the channel a stop is provided tor preventing the casing from entering too far withinthe doorl Therib and channel are so configured in cross section as to secure a dovetail, or T engagement."

In the construction ofFigs. 1 to 6 a single rib 24, located below' the casing will serve to support it, but the two ribs are preferred to relieve the actuating spindle in part ot the duty of retaining the casing from dis;

lacement by ars;

In Figs. 11 and 12 a former construction is shown in which the latch is supported by the posts through W iC h Securing screws 25 are entered. In order that they'inay serve the additional function such posts here designated by the numeral 30 arepositioned farther-from the margins of the esoutcheon plates. They may be provided with'lateral i grooves 81 to receive the latch casing to proj memes vide for the interlocking of the latter with one of the plates; A'post, as 32, limits the inward movement of the casing.

We-claim as our invention -1. In eombinationfa door latch casing adapted to enter a recess in the door. edge,

and a plate for attachment to the side face of the door and having instanding ribs spaced to engageopposite margins of the casing.

" sep'arabl'y interlocked with thecasing to prevent the displacement of the es cut'clieon p'la'te laterally with respect to the door; p

4L. In combination, a mortise latch casing, and an escuteheon plate having an instanding' rib upon which the casing is supported 5. In combination, a'n' escuteheon plate having a pair of instanding horizontal vertically spaced ribs, and a latch casing having dovetail engagement with the ribs. I 6. In combinatlon, a mortise latch casing, and an escu'teheon plate having an lnstandin'gpart for supporting the casing and an instanding abutment engagin theinner end ot'the casing. I v I 1, 7; In combination, a mortise latch casing, and an eseutcheon plate having an instantlm rib interlockii fgf with the casing.

8; In combination, a deer latch easing "adapted toenter a recess in the door edge,

and a plate for attachment to the side race of the door and held in place by interen gagementwith thelatch casing. V '9. In combination, a mortise latchfeaslng adapted for use in connection with a hollow door, and an escntc'heon plate havingja projection for entering the chamber of th'e'door as entered into service position. a

10. In combination, a nio'rti se latch easing adapted for nse in connection with a hollow door, and an eseuteheon plate adapted to' be and upon whichthe latcli casing may slide secured to the side of such doorand having a projection extending into the chamber thereof for supporting the latch c s ing; I i v 'WILLIAM- S.

" JAMES A; 

